AD: Dermal conctact with chemicals in soil
In EnviroPRA: Environmental Probabilistic Risk Assessment Tools

Description Usage Arguments Value Author(s) References Examples

Estimates the Absorbed dose [mg/Kg*day] of chemicals through dermal contact with a soil

1	AD(CS = 1, SA = 2800, AF = 0.2, ABS = 0.001, EF = 350, ED = 24, BW = 70, AT = 365 * 70)

`CS`	Chemical concentration in soil [mg/Kg]
`SA`	Skin surface area available for contact [cm^2]
`AF`	Skin adherence factor [mg/cm^2]
`ABS`	Absorption factor (Chemical specific) [-]
`EF`	Exposure frequency [day/yr]
`ED`	Exposure duration [yr]
`BW`	Body weight [Kg]
`AT`	Averaging time [day] (Note that for No carcinogenic effects AT should be equal to 365*ED)

Chemical Absorbed dose [mg/Kg*day]

F. Barrio-Parra

US Environmental Protection Agency, 2011. Exposure Factors Handbook: 2011 Edition. U.S. Environmental Protection Agency, EPA/600/R-(September), pp 1466.

## Estimated absorbed dose for the estimation of carcinogenic effects using 
# the default variables (EPA 2011) for a chemical soil concentration of 
# 0.2 mg/Kg

AD( CS=0.2)

# For a systemic effect:

AD( CS=0.2, AT=24*365)

# Specifying all the parameters for the carcinogenic case

AD( CS=0.2, SA=2300, AF=0.25, ABS=0.01, EF=150, ED=10, BW=80)